In the early morning of April 17, the joint investigation team of Shanxi Road and Bridge Group issued a briefing saying that on the 16th, the network reflected the quality of the national highway 241 and the provincial highway Lanma line Fenhe reservoir section realignment project undertaken by the company's road and bridge company. The follow-up will be handled in accordance with laws and regulations according to the investigation situation.
Event Recap –
The bridge pier is the foundation of the bridge flying over the mountains and rivers, and its firmness and stability are directly related to the safety of the road and the people.
Recently, Zhu Zhulin, the labor subcontractor of the LJ2 bid section of the Fenhe Reservoir Sub-line Bridge and Tunnel Project of Shanxi Provincial Highway 241 and Provincial Highway Lanma Line, reported that the bridge pier foundation pile built by Shanxi Road and Bridge First Engineering Co., Ltd. (hereinafter referred to as Shanxi Road and Bridge No. 1 Company), the construction contractor of the LJ2 bid section of the project, is suspected of cutting corners and has major safety hazards.
It is understood that the realignment project of the Fenhe Reservoir section of the National Highway 241 and the Provincial Highway Lanma Line is an important livelihood project to protect the water quality and safety of the Fenhe Reservoir and open up the traffic bottleneck in the western region of Taiyuan, and is also a key project in Shanxi Province. The total length is about 56.614 km. It is constructed according to the standard of two-way 4-lane first-class highway.
Zhu Zhulin, the labor subcontractor of the LJ2 bid section of this project, reported in his real name that the design pile length of the rotary excavation pile foundation of the 7B-3 pier of the Shigou Bridge in the bid section was 57 meters. The quality inspection department requires the project department to treat the 7B-3 pile foundation and re-pour the qualified concrete.
(Picture provided by whistleblower Zhu Zhulin: Broken pile treatment site)
According to Zhu Zhulin, in the process of asking him to use a rotary excavator to clean up the unqualified concrete, a large part of the reinforcement cage of the pile foundation was broken by the rotary drilling rig. Because of the reinforcement cage of the pile foundation, it can increase the bearing capacity and stability of the pile foundation, improve the safety performance of the bridge, and at the same time, it can also improve the seismic performance of the pile foundation and reduce the loss caused by the earthquake. Therefore, the problem of the reinforcement cage being broken by machinery is very serious.
Zhu Zhulin reported the situation to the project department. As a result, the project department asked him to pour concrete directly, and did not replace the reinforcement cage. Moreover, the depth of the entire pile foundation is 57 meters, but the actual depth of the unqualified concrete is only 20 meters, and the remaining 37 meters of pile foundation is still unqualified concrete, and there are major safety hazards.
Zhu Zhulin: "When I was dealing with the pile, the concrete broke when I grabbed it with my hands. After the confirmation of the quality inspection department, the project department of Shanxi Road and Bridge No. 1 Company was ordered to dispose of the entire pile. They only processed 20 meters (57 meters should have been actually processed). We used a rotary excavator to drill down from the middle of the pile foundation reinforcement cage, which is a large mechanical equipment with great strength and broke the reinforcement cage inside. This is equivalent to the absence of steel bars in the pile foundation. We reported the situation to the project department. The project department said, it's okay, you can do whatever you want, don't tell others!"
(Photo provided by whistleblower Zhu Zhulin)
Zhu Zhulin, a labor subcontractor, also reported that the 8-0 and 9-1 pile foundations of Qiantougou Bridge in the LJ2 bid section of the Fenhe Reservoir Subgrade Bridge and Tunnel Project of National Highway 241 and Provincial Highway Lanma Line were seriously damaged due to the breaking of the reinforcement cage in the process of lowering the reinforcement cage into the pile foundation hole. Later, with the consent of the project department of Shanxi Road and Bridge No. 1 Company, the two pile foundations directly used the steel cages that had been seriously damaged. In addition, the 6B-0 pile foundation of the Shigou Bridge and the 8-3 pile foundation of the Ankang Bridge in the bid section, because the pile foundation reinforcement cage is not long enough, the project department directly used 4 steel reinforcement welded between the two reinforcement cages instead of the complete reinforcement cage. As a result, the stability and bearing capacity of the bridge pier are greatly reduced, and there are major safety hazards.
Zhu Zhulin: "Because of transportation errors and other reasons, the steel cage is short, and it is very difficult to transport the steel cage back during construction operations in the mountain. They (the project department of Shanxi Road and Bridge No. 1 Company) said, 'Come on, take the steel bar on top!' because each pile foundation is equipped with an acoustic tube to check the quality of the steel cage, and the steel cage is not long enough, so it cannot pass the inspection. Therefore, the project department secretly takes a few steel bars to weld in the middle of the two steel cages, instead of the complete steel cage, so as to make up for the length of the steel cage required by the entire pile foundation, there are major safety hazards. ”
Reporter: "Between the two reinforcement cages, it is illegal to weld with steel bars?"
Zhu Zhulin: "Yes, just use four steel bars, the normal one is a steel cage, have you ever seen it? The middle of the two steel cages is welded with four steel bars. Only four steel bars are used to support (load-bearing), just like a person is normally two legs load-bearing, and now half of the legs have no load-bearing capacity. ”
(Whistleblower Zhu Zhulin provided picture: damaged steel cage)
Zhu Zhulin reported that in the LJ2 bid section of the National Highway 241 and the Provincial Highway Lanma Line Fenhe Reservoir Subgrade Bridge and Tunnel Project, according to the requirements of the construction drawings, the welding length of the connection points between the reinforcement cages to be used for all bridge foundation piles should reach 25 cm. However, in the actual construction, the connection point between the two reinforcement cages is only welded 5-8 cm. And there are many connection points that are not welded, which seriously affects the stability and load-bearing capacity of bridge piers. Zhu Zhulin said worriedly: "I am scared of all kinds of cutting corners by Shanxi Road and Bridge No. 1 Company! Once a bridge collapse accident occurs due to the quality of the bridge piers, the consequences will be unimaginable. ”
(Picture provided by whistleblower Zhu Zhulin: Welding of steel cage)
In this regard, the reporter made a special trip to Shanxi Luqiao No. 1 Company to verify the situation. Ji Wenjun and Zhang Jianlu, the heads of the project department, told reporters that the situation reflected by Zhu Zhulin was not true, and showed reporters a pile inspection and testing report of the Qiantougou Bridge.
Ji Wenjun: "After the foundation pile is tested, the construction of the pier stud can be carried out. A report will be issued after the pile inspection is completed. If you look back, the 60 piles in the inspection report have test conclusions. ”
Reporter: "Is the content of this report mainly steel bar?"
Zhang Jianlu: "There are both steel and concrete. ”
(Qiantougou Bridge foundation pile inspection report provided by Shanxi Road and Bridge No. 1 Company)
According to the two persons in charge of the Shanxi Road and Bridge Project Department, the test report was issued after the completion of the foundation pile construction, and only the foundation pile was tested and qualified, and the construction of the next step of the project could be carried out. This report shows that all piles are Class I piles, i.e. they are qualified.
However, the reporter found that the entrusting unit of this report is Shanxi Road and Bridge No. 1 Company, and the testing unit is Shanxi Road and Bridge Group Experimental Testing Center Co., Ltd. Both companies are wholly-owned subsidiaries of Shanxi Road and Bridge Construction Group Co., Ltd. Is it reasonable for another wholly-owned subsidiary of Shanxi Road and Bridge Construction Group to conduct quality inspections for the projects of its wholly-owned subsidiary? Ji Wenjun, project leader of Shanxi Road and Bridge No. 1 Company, said: "The three companies are all independent legal persons. ”
Ji Wenjun: "The testing company is an independent organization, and we all belong to the subsidiaries of Shanxi Road and Bridge. However, they are all independent legal persons, not that they are all (for their own engineering testing), and they all have external business operations. ”
(Photo by reporter)
Zhu Zhulin, the labor subcontractor of the project, did not approve of this test report. He repeatedly reported to the safety, quality and environmental protection supervision department of Shanxi Road and Bridge Construction Group Co., Ltd. that there were quality problems in the construction of Shanxi Road and Bridge No. 1 Company, and Liu Kai, a staff member of the safety, quality and environmental protection supervision department, orally replied to Zhu Zhulin: "There is no problem with the quality of the pile foundation, and Shanxi Road and Bridge Group cannot issue written materials indicating that there is no problem with the quality of the project." ”
Zhu Zhulin told reporters: "My rotary excavator was parked at the construction site because of an economic dispute with Shanxi Road and Bridge Company. In order to verify that the problems reflected are true, I have repeatedly suggested to Shanxi Road and Bridge Group that a rotary excavator be used to drill 20 meters into the ground next to the bridge pier to test the pile foundation. But the project department did not agree. ”
(Whistleblower Zhu Zhulin provided a picture: a rotary excavator parked at the construction site)
According to Zhu Zhulin, many of the labor subcontractors of the project have economic disputes with Shanxi Road and Bridge No. 1 Company. The reason is that Shanxi Road and Bridge No. 1 Company will arrange its labor subcontractors to do a lot of work that is not agreed in the contract. In addition, Shanxi Road and Bridge No. 1 Company was chaotic in project management, and the supply of materials could not keep up, resulting in labor subcontractors having to stop work and wait. All of this increases the cost of labor subcontractors.
Zhu Zhulin said that he and Shanxi Luqiao No. 1 Company originally agreed to work for a year and a half. However, he worked for two and a half years before it was completed. In the meantime, construction machinery and workers' wages are a lot of expenses. In addition, the construction of the construction sidewalk in the bid section where Shanxi Road and Bridge No. 1 Company is located was not constructed in accordance with the construction design plan, and the construction sidewalk was muddy and difficult to walk in rainy and snowy weather, which also led to the slack of labor subcontractors and the increase in costs.
(The whistleblower provided data on the construction of the second contract section)
According to a number of people familiar with the matter told reporters, the second contract section of the National Highway 241 and the Provincial Highway Lanma Line Fenhe Reservoir Realignment Project clearly stipulates that the width of the main construction road of the contract section is 6.5 meters, and 18 cm of water-stabilized base and 18 cm of cement concrete pavement are laid. However, almost all of the main construction roads 1 to 3 built in the bid section of Shanxi Road and Bridge No. 1 Company did not lay a water-stabilized base and cement concrete pavement in accordance with the construction design requirements. Part of the road is sprinkled with gravel, and part of it is dirt road. According to insiders, as long as there are clear requirements for laying cement concrete pavement in the planning and design, the investment and construction party of the project will definitely allocate funds to the construction unit. Shanxi Road and Bridge Company No. 1 got the money, but did not build the construction road in accordance with the design requirements, and was suspected of embezzling and misappropriating the project money. According to the conservative estimates of the respondents, the project cost is at least several million.
(The whistleblower provided a picture of the construction sidewalk)
Other labor subcontractors of the project also reported to reporters that the roadbed of the entire highway from the Fufu Tunnel to the Konghegou Bridgehead section of the Fenhe Reservoir Realignment Project of National Highway 241 and Provincial Highway Lanma Line did not use AB materials. Instead, a roadbed was paved with crushed stone blocks and muck that had not undergone any processing. The roadbed paved with this messy stone muck is not solid and there are gaps, which will cause the roadbed to sink and the road surface to be damaged over time.
In addition, some labor subcontractors also reported that there were no use of steel bars and steel mesh at the tops of all the tunnels in the LJ2 section of the National Highway 241 and the Fenhe Reservoir Sub-route Bridge and Tunnel Project of the Provincial Highway Lanma Line.
The reporter has fed back to the Shanxi Provincial Department of Transportation on the problems of Shanxi Road and Bridge No. 1 Company suspected of cutting corners and embezzling project funds in the realignment project of the Fenhe Reservoir on National Highway 241 and Provincial Highway Lanma Line.
Source: CCTV, China Traffic Broadcasting, etc. Editor: Xiao M